1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c40939b9d66fa03b869ac5aae4897b7cf44cef5117fae4ff4b15f9479f755c4. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d842dd00-a91d-4452-b0cf-5938d496471b.json and https://artists.proofprofile.net/proofs/artist/d842dd00-a91d-4452-b0cf-5938d496471b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5e572b90ac534a0bb7da5606d1484cf17515d6ef27d6a9d8aa3c2521f96a43. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:05:36Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA71802901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x019d06fa167232b52f150e3dc2d551fe92027322ec6b761b2546c5c07eef1b65. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USYB31923902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8598c6cabfa0e22dd916977282bfe68c9cf0a5cf5b679674007d375dd901cbe. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USYB31925001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x059f06e2fc3e3c380e4f0962852f150e34da62a9386e439e76c94f425e1d9531. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:57:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USYB31925005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x357e580c0306b477ee9d1fbb6710f551020b0e7de799d726c2860bed01bf041a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USYB31925006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4091ee527dafcf3ceaad3f5c993d53e11ca12ed3fe93a487b2605b1c199831bf. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USYB31925008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ead1067bfef965d24ca0668e49589e7e07800bbaf28079408810ed0d2506e1. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:00:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USYB31925009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d4b0b89ed22eb56800ae6c09ce76d3d47e6e53e8b87d64930df6acc696339d4. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USYB31925010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc67850ade0434366806d3cf4598cd6e629c6ef8d43fab625b4071dae4dfdd4b0. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USYB31925011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc36e767e781ed8647e3141ee73137a0bba132dfbeb9bd90a96c64fa5753189. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USYB32231202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd73ec45ce5b69f0d9cfe4112750d04bdf21c608fd0eee088551726a5feb9843b. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:52:36Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USYB32231204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5c40baac541438e1cb964d19a565eccc55c7a2e3af08e1942935bf5803040f. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USYB32231205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d391a4b79ef3d48a1a79513073bea08d2a4fb1c00c91fd1476efd6959e74019. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USYB32234401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f3b02eb87ca7cf3ed53056652ce4c07d030e47d7d719e1950e6da38f78ab347. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USYB32336001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e65954e1d341bc79629902aee4f4b46a36d03858885af2c44116a5c2a6e454. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:43:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USYB32335601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b2c91da779e87153a32f4dc51959243e20d7fe7671da887927d3eb4d6b524e9. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:39:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USYB32335602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6722a39e9bbd743fd72e55b46c0d6ab0b4cbde7e055bb32337a31250077da8eb. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USYB32335801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1662524404c8ca6cd160466faf2aea1c1e3aee83f51dbd32dc151d99c75cc0eb. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:57:16Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USYB32335802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc47cf66d493c86dca23a05fac49a3fb1487e5727e22376cf9e3e46a30bab682c. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USYB32437001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ce4f9946264e7b88a8b9123670e200159a2488ead043edc1a7c80e11626e9e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USYB32437003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aeee8225e4d7d558c339604e977319b39bc1d21d2bab0bbbe1e49a97cdb47c6. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:01:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USYB32437006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b62ae25f0d9dd6089720d30389dcdb8c1209d5f757a78884a234156ee8a79c1. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USYB32437007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebb70d5946cf35da1297f77f32813501d1a774f0116db53f17181370306129e8. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USYB32437008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed40ed8d5a228e73d6642264f400e37efa77f509552c88059c55c0544fceb4e. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USYB32437009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f8d9c101306f8f6763958fca6bfa1e803309056551cdbbfe9b3cb3c6fea75a5. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USYB32437010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc1a74116da386d9b7363aadec63c98c2a7192c86589e4d0b3db842d9ddb2ca8. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:51:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USYB32437011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x731f7f204bb9523a113658bd1442acd839d6468af8e3fdd4867a563b23579a7b. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T02:47:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USYB32539702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74878aff360814de4afd06e9e32086cc2294a2d84768e3d5c5d172a2f3878d73. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:11:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USYB32539704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cfdefe254d02ab72a550f35436dfbcccb73d470220cbe848886b3bd96bee48f. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USYB32539705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe42bcf50897cc6f6f9faf6a00c042926f20add732fd79ce3b9d32ccdc02b2e8. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USYB32539707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ade29aed810a261e148a2d7b0760ad306b7f797aab6a27fa0e56b86a44f690d. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USYB32539708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83783da305bf0a067f747733b5294341da1cbf67cdbec627d4e98bad5f46873e. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USYB32539709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a9ab465885a769d65b870392b0acf8af0f6deccdf5a5d33bfc6633ddf1c80c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USYB32539710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152e73db59245e57a42e14a0769ed79a1af35afdf45071d30b6b5413a5fc65c0. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USYB32539711.